Just heard back from the vet.  We had Steve's x-
rays sent to a veterinary radiologist (it's 
always best to get a second opinion from a 
specialist, as a previous poster so rightly 
pointed out), and his analysis is that the tumor 
is probably either in the small intestine or 
colon, and every bit as large as the first vet 
had estimated.  There are no visible nodules 
anywhere else, though, which is a hopeful sign 
that perhaps it hasn't metastasized.

Our furry little thing will be going in on 
Wednesday morning for surgery, and we're keeping 
our fingers crossed like crazy that A) they 
don't find anything else and B) the tumor is 
easily removed.  Meanwhile, he's living on this 
special high-fat, high-protien wet-food diet, 
and he thinks he's the luckiest cat in the 
world.  Here's hoping all goes well and we have 
to deal with his complaints when the gourmet 
buffet is over after recovery...

I now return you to your regularly scheduled day.